To reiterate,
Csus 2 is just a C with an open d string which you hammer on the 2nd fret(* is the hammer on sign).
Csus 4 is the same as a C except the d string is played on the 3rd fret.
Cmaj9 comes up later and it's like a C except the middle note is on the a string not d
This is how Mitch plays it himself.
Csus2 * Csus4 x3 C
Csus2
i'll start it off by saying i'm not one for the complaining
Csus4
you wouldn't know it from my writing
C
you wouldn't know it from my songs
Csus4 Csus2 *
but i am different, i am free
Csus4 Csus4
i am what you need
Csus2
C Csus2
but oh my god, i miss you more than i thought was possible
Csus4 Cmaj9
i understood the obstacles but you could have tried more
C Csus2
because sometimes it seems, i need a mom more than i need to eat
Csus4 C
so i didn't eat and i didn't sleep, i'd go all day without a bite
Csus2 *
and that's not my fault
Csus4
that's not my fault
Cmaj9
C Csus2
and i'll admit sometimes my chest gets so tight that i throw fits
Csus4
you said you'd always be there, where are you through all of this?
C Csus2
because this is hard, this is way harder than i thought
Csus4
i'm so concerned about the ending that i don't even know the plot
C Csus2 C
except for i am different, i am free
Csus4
i am what you need
C Csus2 C
i am different, i am free
Csus4
i am what you need
C Csus2
so you think of all the things that make you sad
Csus4
and don't include them in your better half
C Csus2 Csus4
because i'm not like you
C Csus2 Csus4
i don't find happiness in a meaningless existence
C
i don't know what i'm going to do
Csus2 C
but i am different, i am free
Csus4
i am what you need
C Csus2
and yeah, i believe that there's a god
Csus4
i believe that there is something out there other than my thoughts
C
i believe it was never science against religion
Csus2
it wasn't poor against wealth
Csus4
It was always me against myself
C
and i'm so scared who's going to win
Cmaj9
because i wake up feeling so shitty
C
it's been so long since you've been with me
Csus2
i don't know where this old body's going to go
or my soul
C Csus4
but i know i am different, i am free
Csus2 C
i am what you need
C Csus4
i am different, i am free
Csus2 Csus4
i am what you need